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Ray Set visibility: public cd7208b 1d ago
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{
  "schema_version": 1,
  "type": "component",
  "slug": "lp2981aim5-3-3",
  "title": "LP2981AIM5-3.3",
  "brief": "Texas Instruments Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-23-5. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "power management (pmic)",
    "lp2981aim5-3.3",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "LP2981AIM5-3.3",
    "manufacturer": "Texas Instruments",
    "package": "SOT-23-5",
    "pin_count": 5,
    "category": "Power Management (PMIC)",
    "subcategory": "Voltage Regulators - Linear, Low Drop Out (LDO) Regulators",
    "datasheet": "https://www.ti.com/cn/lit/gpn/lp2981-n",
    "parts": {
      "symbol": "lp2981aim5-3-3.kicad_sym",
      "footprint": "lp2981aim5-3-3.kicad_mod",
      "model_3d": "lp2981aim5-3-3-hero.glb",
      "model_3d_plain": "lp2981aim5-3-3-etched.glb",
      "model_3d_step": "lp2981aim5-3-3-etched.step",
      "model_3d_step_plain": "lp2981aim5-3-3.step",
      "lbr": "lp2981aim5-3-3.lbr"
    },
    "distributor_links": {
      "lcsc": "C130187",
      "digikey": "2156-LP2981AIM5-3.3-ND",
      "mouser": "926-LP2981AIM5-33"
    },
    "distributor_check": {
      "checked_at": "2026-11-05T22:34:30Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "2156-LP2981AIM5-3.3-ND",
        "status": "found"
      },
      "mouser": {
        "pn": "926-LP2981AIM5-33",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "IN",
        "type": "power_in",
        "description": "Input supply pin; use a capacitor of 1µF or larger from this pin to ground."
      },
      {
        "number": "2",
        "name": "GND",
        "type": "power_in",
        "description": "Common ground (device substrate)."
      },
      {
        "number": "3",
        "name": "ON/OFF",
        "type": "input",
        "description": "Enable pin for the LDO; driving it high enables the device and driving it low disables it, with thresholds listed in the Electrical Characteristics table."
      },
      {
        "number": "4",
        "name": "NC",
        "type": "unconnected",
        "description": "Reserved for post-packaging factory calibration of VOUT accuracy; must be left floating and not connected to any potential or ground."
      },
      {
        "number": "5",
        "name": "OUT",
        "type": "power_out",
        "description": "Regulator output; use a capacitor of 2.2µF or larger from this pin to ground, with nominal output capacitance greater than 1µF."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.3",
      "factory_chain": {
        "factory": "2.0.0",
        "extractor": "extract_pins 0.3",
        "primary_model": "claude-haiku-5-5",
        "primary_mode": "text",
        "consensus_model": "claude-sonnet-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: Pin-number-to-name mapping taken from Table 4-1 (Pin Functions) on page 3. The text extraction of Fi"
        ],
        "pages_sent": 11,
        "cost_usd": 0.0159,
        "at": "2026-11-05T22:34:22"
      },
      "datasheet": {
        "url": "https://www.ti.com/cn/lit/gpn/lp2981-n",
        "pages": 43,
        "sha256": "4edc0bbf3eaa25d3",
        "source_tier": "mfr"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 5,
        "described": 5,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "lp2981aim5-3-3.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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          2.9,
          1.55
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "720a6eab0024069bbee68e7cb4c3ff1149468a34611225cdc852662c5d0ec2b7",
        "checked": "2026-11-05",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "lp2981aim5-3-3-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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          2.9,
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        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "23da80a75e53726056c878e24cdb54f4942c15425d96db6b9cd559246a5c61ba",
        "checked": "2026-11-05",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Texas Instruments",
      "Package": "SOT-23-5",
      "Category": "Power Management (PMIC)",
      "Pins": "5"
    },
    "appearance": {
      "contacts": {
        "quote": "practical to the respective LDO pin connections. Place ground return connections to the input and output capacitors, and to the LDO ground pin as close to each other as possible, connected by a wide, ",
        "page": 30,
        "doc": "ds.pdf",
        "material": "copper"
      },
      "version": 1,
      "datasheet_sha256": "4edc0bbf3eaa25d3245387ad01799f08b0f3805053e072be0699ebf8f070d8af"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "4edc0bbf3eaa25d3245387ad01799f08b0f3805053e072be0699ebf8f070d8af",
      "rows": [
        {
          "name": "Continuous input voltage range (legacy chip)",
          "symbol": "VIN",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 16,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Output voltage range (legacy chip)",
          "symbol": "VOUT",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 9,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "ON/OFF pin voltage range (legacy chip)",
          "symbol": "VON/OFF",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 16,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Input-output voltage (legacy chip)",
          "symbol": "VIN – VOUT",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 16,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Operating junction temperature",
          "symbol": "TJ",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -55,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Storage temperature",
          "symbol": "Tstg",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -65,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Supply input voltage (legacy chip)",
          "symbol": "VIN",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 2.1,
          "typ": null,
          "max": 16,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Input-output differential (legacy chip)",
          "symbol": "VIN – VOUT",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 0.7,
          "typ": null,
          "max": 11,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Enable voltage (legacy chip)",
          "symbol": "VON/OFF",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 0,
          "typ": null,
          "max": null,
          "conditions": "upper limit printed as VIN",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Output current",
          "symbol": "IOUT",
          "kind": "recommended_operating",
          "unit": "mA",
          "min": 0,
          "typ": null,
          "max": 100,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Input capacitor",
          "symbol": "CIN",
          "kind": "recommended_operating",
          "unit": "µF",
          "min": 1,
          "typ": null,
          "max": null,
          "conditions": "values assumed to derate to 50% of nominal",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Output capacitor (legacy chip)",
          "symbol": "COUT",
          "kind": "recommended_operating",
          "unit": "µF",
          "min": 2.2,
          "typ": null,
          "max": 4.7,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Operating junction temperature",
          "symbol": "TJ",
          "kind": "recommended_operating",
          "unit": "°C",
          "min": -40,
          "typ": null,
          "max": 125,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Output voltage tolerance (legacy chip, A grade)",
          "symbol": "ΔVOUT",
          "kind": "tolerance",
          "unit": "%",
          "min": -0.75,
          "typ": null,
          "max": 0.75,
          "conditions": "IL = 1 mA",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Output voltage tolerance (legacy chip, A grade)",
          "symbol": "ΔVOUT",
          "kind": "tolerance",
          "unit": "%",
          "min": -1,
          "typ": null,
          "max": 1,
          "conditions": "1 mA < IL < 100 mA",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Output voltage tolerance (legacy chip, A grade)",
          "symbol": "ΔVOUT",
          "kind": "tolerance",
          "unit": "%",
          "min": -2.5,
          "typ": null,
          "max": 2.5,
          "conditions": "1 mA < IL < 100 mA, –40°C ≤ TJ ≤ 125°C",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Line regulation (legacy chip)",
          "symbol": "ΔVOUT(ΔVIN)",
          "kind": "electrical",
          "unit": "%/V",
          "min": null,
          "typ": 0.007,
          "max": 0.014,
          "conditions": "VO(NOM) + 1 V ≤ VIN ≤ 16 V",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Line regulation (legacy chip)",
          "symbol": "ΔVOUT(ΔVIN)",
          "kind": "electrical",
          "unit": "%/V",
          "min": null,
          "typ": 0.007,
          "max": 0.032,
          "conditions": "VO(NOM) + 1 V ≤ VIN ≤ 16 V, –40°C ≤ TJ ≤ 125°C",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Dropout voltage (legacy chip)",
          "symbol": "VIN - VOUT",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": 1,
          "max": 3,
          "conditions": "IOUT = 0 mA",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Dropout voltage (legacy chip)",
          "symbol": "VIN - VOUT",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": null,
          "max": 5,
          "conditions": "IOUT = 0 mA, –40°C ≤ TJ ≤ 125°C",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Dropout voltage (legacy chip)",
          "symbol": "VIN - VOUT",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": 7,
          "max": 10,
          "conditions": "IOUT = 1 mA",
          "source_page": 6,
          "source": "datasheet"
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        {
          "name": "Dropout voltage (legacy chip)",
          "symbol": "VIN - VOUT",
          "kind": "electrical",
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          "min": null,
          "typ": null,
          "max": 15,
          "conditions": "IOUT = 1 mA, –40°C ≤ TJ ≤ 125°C",
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          "source": "datasheet"
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        {
          "name": "Dropout voltage (legacy chip)",
          "symbol": "VIN - VOUT",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": 70,
          "max": 100,
          "conditions": "IOUT = 25 mA",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Dropout voltage (legacy chip)",
          "symbol": "VIN - VOUT",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": null,
          "max": 150,
          "conditions": "IOUT = 25 mA, –40°C ≤ TJ ≤ 125°C",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Dropout voltage (legacy chip)",
          "symbol": "VIN - VOUT",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": 200,
          "max": 250,
          "conditions": "IOUT = 100 mA",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Dropout voltage (legacy chip)",
          "symbol": "VIN - VOUT",
          "kind": "electrical",
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          "min": null,
          "typ": null,
          "max": 375,
          "conditions": "IOUT = 100 mA, –40°C ≤ TJ ≤ 125°C",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "GND pin current (legacy chip)",
          "symbol": "IGND",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": 65,
          "max": 95,
          "conditions": "IOUT = 0 mA",
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          "source": "datasheet"
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        {
          "name": "GND pin current (legacy chip)",
          "symbol": "IGND",
          "kind": "electrical",
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          "min": null,
          "typ": null,
          "max": 125,
          "conditions": "IOUT = 0 mA, –40°C ≤ TJ ≤ 125°C",
          "source_page": 6,
          "source": "datasheet"
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        {
          "name": "GND pin current (legacy chip)",
          "symbol": "IGND",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": 80,
          "max": 110,
          "conditions": "IOUT = 1 mA",
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          "source": "datasheet"
        },
        {
          "name": "GND pin current (legacy chip)",
          "symbol": "IGND",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": null,
          "max": 170,
          "conditions": "IOUT = 1 mA, –40°C ≤ TJ ≤ 125°C",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "GND pin current (legacy chip)",
          "symbol": "IGND",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": 200,
          "max": 300,
          "conditions": "IOUT = 25 mA",
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        {
          "name": "GND pin current (legacy chip)",
          "symbol": "IGND",
          "kind": "electrical",
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          "typ": null,
          "max": 550,
          "conditions": "IOUT = 25 mA, –40°C ≤ TJ ≤ 125°C",
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          "source": "datasheet"
        },
        {
          "name": "GND pin current (legacy chip)",
          "symbol": "IGND",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": 600,
          "max": 800,
          "conditions": "IOUT = 100 mA",
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          "source": "datasheet"
        },
        {
          "name": "GND pin current (legacy chip)",
          "symbol": "IGND",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": null,
          "max": 1500,
          "conditions": "IOUT = 100 mA, –40°C ≤ TJ ≤ 125°C",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "GND pin current in shutdown (legacy chip)",
          "symbol": "IGND",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": 0.01,
          "max": 0.8,
          "conditions": "VON/OFF < 0.3 V, VIN = 16 V",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "GND pin current in shutdown (legacy chip)",
          "symbol": "IGND",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": 0.05,
          "max": 2,
          "conditions": "VON/OFF < 0.15 V, VIN = 16 V, –40°C ≤ TJ ≤ 125°C",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Short output current (legacy chip)",
          "symbol": "IO(SC)",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 150,
          "max": null,
          "conditions": "RL = 0 Ω (steady state)",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "ON/OFF input voltage low (legacy chip)",
          "symbol": "VON/OFF",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 0.5,
          "conditions": "Low = Output OFF",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "ON/OFF input voltage low (legacy chip)",
          "symbol": "VON/OFF",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 0.15,
          "conditions": "Low = Output OFF, VOUT + 1 ≤ VIN ≤ 16 V, –40°C ≤ TJ ≤ 125°C",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "ON/OFF input voltage high (legacy chip)",
          "symbol": "VON/OFF",
          "kind": "electrical",
          "unit": "V",
          "min": 1.4,
          "typ": null,
          "max": null,
          "conditions": "High = Output ON",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "ON/OFF input voltage high (legacy chip)",
          "symbol": "VON/OFF",
          "kind": "electrical",
          "unit": "V",
          "min": 1.6,
          "typ": null,
          "max": null,
          "conditions": "High = Output ON, VOUT + 1 ≤ VIN ≤ 16 V, –40°C ≤ TJ ≤ 125°C",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "ON/OFF input current (legacy chip)",
          "symbol": "ION/OFF",
          "kind": "electrical",
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